Apple Shake 4 - Manual (Page 853)

Chapter 27 Warping and Morphing Images 853
Boundary shapes can be either open, closed, or single-point shapes, depending on
how much of the image you want to lock down. In this instance, you want to exclude
the entire image from the warp effect except for the eye, eyebrow, and surrounding
region, so a closed shape is drawn surrounding this area.
11 Right-click the shape you just created, then choose Set as Boundary Shape from the
shortcut menu.
This effectively sets this shape to be both a source and target shape, which pins that
area of the image down.
Now, you’ll probably need to make adjustments to refine the effect you’re trying to
achieve. It will probably be helpful to use the Visibility and Lock buttons to assist you
when manipulating the shapes, so that you don’t accidentally adjust the wrong points
when two shapes overlap. Use the controls in the Viewer shelf to change the visibility
and locking of all shapes of a given type simultaneously, or set the visibility and locking
of each shape individually in the Parameters tab.
Using the Parameters tab controls for each individual shape, you may rename the
shape, enable it, toggle its visibility, lock the curve so it is visible but can’t be modified,
or delete it. Additional parameters also appear for each connection line and boundary
shape definition you’ve set up.
12 To create an animated effect, keyframe the overallDisplacement parameter to animate
every source/target shape pair simultaneously.
Boundary shapes are orange.